20403740463 has 16 divisors (see below), whose sum is σ = 28640776320. Its totient is φ = 12884796576.

The previous prime is 20403740449. The next prime is 20403740477. The reversal of 20403740463 is 36404730402.

It is an interprime number because it is at equal distance from previous prime (20403740449) and next prime (20403740477).

It is not a de Polignac number, because 20403740463 - 2¹⁶ = 20403674927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403240463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483456 + ... + 523962.

It is an arithmetic number, because the mean of its divisors is an integer number (1790048520).

Almost surely, 2^20403740463 is an apocalyptic number.

20403740463 is a deficient number, since it is larger than the sum of its proper divisors (8237035857).

20403740463 is a wasteful number, since it uses less digits than its factorization.

20403740463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49366.

The product of its (nonzero) digits is 48384, while the sum is 33.

The spelling of 20403740463 in words is "twenty billion, four hundred three million, seven hundred forty thousand, four hundred sixty-three".